2023
Intratumor spatial heterogeneity in programmed death-ligand 1 (PD-L1) protein expression in early-stage breast cancer
Kahn A, Golestani R, Harigopal M, Pusztai L. Intratumor spatial heterogeneity in programmed death-ligand 1 (PD-L1) protein expression in early-stage breast cancer. Breast Cancer Research And Treatment 2023, 201: 289-298. PMID: 37378695, DOI: 10.1007/s10549-023-06977-1.Peer-Reviewed Original ResearchConceptsTriple-negative breast cancerPD-L1 expressionBreast cancerPD-L1Metastatic triple-negative breast cancerPD-L1 positive casesEarly-stage breast cancerPD-L1 protein expressionImmune checkpoint inhibitorsPD-L1 positivityPD-L1 statusProtein expressionWhole study populationPrimary breast tumorsNegative breast cancerConcordant negative resultsCheckpoint inhibitorsMultiple biopsiesPositive cancersCohen's kappa coefficientStudy populationE1L3N antibodyDiscordance rateBreast tumorsPositive cases
2018
Immunological differences between primary and metastatic breast cancer
Szekely B, Bossuyt V, Li X, Wali VB, Patwardhan GA, Frederick C, Silber A, Park T, Harigopal M, Pelekanou V, Zhang M, Yan Q, Rimm DL, Bianchini G, Hatzis C, Pusztai L. Immunological differences between primary and metastatic breast cancer. Annals Of Oncology 2018, 29: 2232-2239. PMID: 30203045, DOI: 10.1093/annonc/mdy399.Peer-Reviewed Original ResearchMeSH KeywordsAdolescentAdultAgedAntineoplastic Agents, ImmunologicalB7-H1 AntigenBiomarkers, TumorBiopsyBreast NeoplasmsDisease ProgressionDrug Resistance, NeoplasmFemaleGene Expression RegulationHumansImmunologic SurveillanceLymphocyte CountLymphocytes, Tumor-InfiltratingMiddle AgedMutation RateTumor EscapeTumor MicroenvironmentYoung AdultConceptsMetastatic breast cancerBreast cancerTherapeutic targetToll-like receptor pathway genesImmuno-oncology therapeutic targetsBreast cancer evolvesImmune proteasome expressionPD-L1 positivityCorresponding primary tumorsPotential therapeutic targetMHC class IImmune-related genesMetastatic cancer samplesLigand/receptor pairLymphocyte countT helperT-regsPD-L1Immune microenvironmentCytotoxic TPrimary tumorMastoid cellsDisease progressionTherapeutic combinationsMacrophage markers
2015
High HER2 Expression Correlates with Response to the Combination of Lapatinib and Trastuzumab
Scaltriti M, Nuciforo P, Bradbury I, Sperinde J, Agbor-Tarh D, Campbell C, Chenna A, Winslow J, Serra V, Parra JL, Prudkin L, Jimenez J, Aura C, Harbeck N, Pusztai L, Ellis C, Eidtmann H, Arribas J, Cortes J, de Azambuja E, Piccart M, Baselga J. High HER2 Expression Correlates with Response to the Combination of Lapatinib and Trastuzumab. Clinical Cancer Research 2015, 21: 569-576. PMID: 25467182, DOI: 10.1158/1078-0432.ccr-14-1824.Peer-Reviewed Original ResearchConceptsProgression-free survivalPathologic complete responseAnti-HER2 therapyHER2 expressionBreast cancerLonger progression-free survivalCombination of lapatinibExpression of p95HER2Trastuzumab-based therapyHigh HER2 expressionMetastatic breast cancerHER2 protein expressionComplete responseHR statusClinical benefitPrimary tumorHER2 levelsCox modelP95HER2PatientsPositive subsetTrastuzumabLapatinibHER2Expression correlates
2014
Gene Signature–Guided Dasatinib Therapy in Metastatic Breast Cancer
Pusztai L, Moulder S, Altan M, Kwiatkowski D, Valero V, Ueno NT, Esteva FJ, Avritscher R, Qi Y, Strauss L, Hortobagyi GN, Hatzis C, Symmans WF. Gene Signature–Guided Dasatinib Therapy in Metastatic Breast Cancer. Clinical Cancer Research 2014, 20: 5265-5271. PMID: 25172932, DOI: 10.1158/1078-0432.ccr-14-0800.Peer-Reviewed Original ResearchConceptsMetastatic breast cancerBreast cancerPredictive gene signaturesGene signatureClinical benefitBiopsy-related adverse eventsSingle-agent activityStable diseaseDasatinib therapyAdverse eventsUnderwent biopsyUnselected patientsPreclinical evidenceUnexpected toxicitiesThree-armPatientsSingle agentMolecular testingCLIA laboratoryDasatinib responseDasatinibBiopsyGene expression profilingCancerExpression profiling
2011
Recommendations from an International Consensus Conference on the Current Status and Future of Neoadjuvant Systemic Therapy in Primary Breast Cancer
Kaufmann M, von Minckwitz G, Mamounas EP, Cameron D, Carey LA, Cristofanilli M, Denkert C, Eiermann W, Gnant M, Harris JR, Karn T, Liedtke C, Mauri D, Rouzier R, Ruckhaeberle E, Semiglazov V, Symmans WF, Tutt A, Pusztai L. Recommendations from an International Consensus Conference on the Current Status and Future of Neoadjuvant Systemic Therapy in Primary Breast Cancer. Annals Of Surgical Oncology 2011, 19: 1508-1516. PMID: 22193884, DOI: 10.1245/s10434-011-2108-2.Peer-Reviewed Original ResearchConceptsNeoadjuvant systemic therapyPrimary breast cancerBreast cancerSystemic therapyBreast-conserving surgery rateLarge adjuvant trialsPathologic complete responseInflammatory breast cancerNew therapeutic regimensIntermediate end pointsInternational Consensus ConferenceClinical research groupAdjuvant trialsNew regimensPathologic responseComplete responseSurgery ratesTherapeutic regimensConsensus conferenceEnd pointTherapyCancerTrialsRegimensPanel of representativesProposals for uniform collection of biospecimens from neoadjuvant breast cancer clinical trials: timing and specimen types
Loi S, Symmans WF, Bartlett J, Fumagalli D, Veer L, Forbes JF, Bedard P, Denkert C, Zujewski J, Viale G, Pusztai L, Esserman LJ, Leyland-Jones BR. Proposals for uniform collection of biospecimens from neoadjuvant breast cancer clinical trials: timing and specimen types. The Lancet Oncology 2011, 12: 1162-1168. PMID: 21684810, DOI: 10.1016/s1470-2045(11)70117-6.Peer-Reviewed Original ResearchConceptsNorth American Breast Cancer GroupBreast International GroupClinical trialsBiopsy procedureNeoadjuvant breast cancer trialsNeoadjuvant clinical trialsBreast cancer clinical trialsBreast cancer groupBreast cancer trialsStart of treatmentCancer clinical trialsNational Cancer InstituteNeoadjuvant trialsDefinitive surgeryNeoadjuvant treatmentCancer groupStudy protocolCancer trialsBreast cancerCancer InstituteUniform collectionTumor tissueBlood collectionTrialsSpecimen typesEffects of Tissue Handling on RNA Integrity and Microarray Measurements From Resected Breast Cancers
Hatzis C, Sun H, Yao H, Hubbard RE, Meric-Bernstam F, Babiera GV, Wu Y, Pusztai L, Symmans WF. Effects of Tissue Handling on RNA Integrity and Microarray Measurements From Resected Breast Cancers. Journal Of The National Cancer Institute 2011, 103: 1871-1883. PMID: 22034635, PMCID: PMC3243675, DOI: 10.1093/jnci/djr438.Peer-Reviewed Original ResearchAdultAgedAged, 80 and overBiopsyBreast NeoplasmsCarcinoma, Ductal, BreastCarcinoma, LobularCarcinoma, Squamous CellCryopreservationFemaleFreeze DryingGene Expression ProfilingGene Expression Regulation, NeoplasticHumansMastectomyMicroarray AnalysisMiddle AgedRNA, NeoplasmSpecimen HandlingTime FactorsMultifactorial Approach to Predicting Resistance to Anthracyclines
Desmedt C, Di Leo A, de Azambuja E, Larsimont D, Haibe-Kains B, Selleslags J, Delaloge S, Duhem C, Kains JP, Carly B, Maerevoet M, Vindevoghel A, Rouas G, Lallemand F, Durbecq V, Cardoso F, Salgado R, Rovere R, Bontempi G, Michiels S, Buyse M, Nogaret JM, Qi Y, Symmans F, Pusztai L, D'Hondt V, Piccart-Gebhart M, Sotiriou C. Multifactorial Approach to Predicting Resistance to Anthracyclines. Journal Of Clinical Oncology 2011, 29: 1578-1586. PMID: 21422418, DOI: 10.1200/jco.2010.31.2231.Peer-Reviewed Original ResearchMeSH KeywordsAntibiotics, AntineoplasticAntigens, NeoplasmBiomarkers, TumorBiopsyBreast NeoplasmsChemotherapy, AdjuvantDNA Topoisomerases, Type IIDNA-Binding ProteinsDrug Resistance, NeoplasmEpirubicinEuropeFemaleGene Expression ProfilingGene Expression Regulation, NeoplasticHumansMiddle AgedNeoadjuvant TherapyOdds RatioPatient SelectionPoly-ADP-Ribose Binding ProteinsPredictive Value of TestsProspective StudiesReceptor, ErbB-2Receptors, EstrogenReproducibility of ResultsRisk AssessmentRisk FactorsTexasTreatment FailureConceptsPathologic complete responseHuman epidermal growth factor receptor 2Neoadjuvant trialsTOP trialPredictive valueEstrogen receptor-negative tumorsEpidermal growth factor receptor 2High negative predictive valuePrimary end pointGrowth factor receptor 2Receptor-negative tumorsResponse/resistanceFactor receptor 2Negative predictive valueUseful clinical toolER-negative samplesA scoresAnthracycline monotherapyEvaluable patientsGene expression signaturesComplete responseBreast cancerImmune responseReceptor 2Patients
2010
Different gene expressions are associated with the different molecular subtypes of inflammatory breast cancer
Iwamoto T, Bianchini G, Qi Y, Cristofanilli M, Lucci A, Woodward WA, Reuben JM, Matsuoka J, Gong Y, Krishnamurthy S, Valero V, Hortobagyi GN, Robertson F, Symmans WF, Pusztai L, Ueno NT. Different gene expressions are associated with the different molecular subtypes of inflammatory breast cancer. Breast Cancer Research And Treatment 2010, 125: 785-795. PMID: 21153052, PMCID: PMC4109066, DOI: 10.1007/s10549-010-1280-6.Peer-Reviewed Original ResearchConceptsInflammatory breast cancerClinical subtypesBreast cancerNon-IBC patientsCase-control studyDistinct clinical subtypesDifferent molecular subtypesNon-IBC tumorsSignificant differencesNon-IBC specimensImmune system-related pathwaysLipid metabolism-related pathwaysHER2 statusReceptor phenotypeMetabolism-related pathwaysMolecular subtypesIBC tumorsSurvival curvesSubtypesTumor samplesHormone receptorsCancerPatientsT-testHER2
2003
Chemotherapy-Induced Apoptosis and Bcl-2 Levels Correlate with Breast Cancer Response to Chemotherapy
Buchholz TA, Davis DW, McConkey DJ, Symmans WF, Valero V, Jhingran A, Tucker SL, Pusztai L, Cristofanilli M, Esteva FJ, Hortobagyi GN, Sahin AA. Chemotherapy-Induced Apoptosis and Bcl-2 Levels Correlate with Breast Cancer Response to Chemotherapy. The Cancer Journal 2003, 9: 33-41. PMID: 12602766, DOI: 10.1097/00130404-200301000-00007.Peer-Reviewed Original ResearchMeSH KeywordsAdultAgedAntineoplastic Combined Chemotherapy ProtocolsApoptosisBiomarkers, TumorBiopsyBreast NeoplasmsDocetaxelDoxorubicinFemaleHumansIn Situ Nick-End LabelingMiddle AgedNeoplasm, ResidualPaclitaxelPredictive Value of TestsProspective StudiesProto-Oncogene Proteins c-bcl-2TaxoidsTime FactorsConceptsBreast cancer responsePathological complete responseCancer responseComplete responseResidual diseaseBcl-2Breast cancer primary tumorsApoptosis levelsBreast cancer treatmentBcl-2 expressionChemotherapy-induced apoptosisTreatment-induced apoptosisMann-Whitney testTumor cell apoptosisPrimary tumorCore biopsyPredictive markerDoxorubicin chemotherapySerial measurementsImmunohistochemical assaysChemotherapyPretreatment samplesLevel correlatesTumorsSemiquantitative immunohistochemical assay
2002
Global Gene Expression Changes During Neoadjuvant Chemotherapy for Human Breast Cancer
Buchholz TA, Stivers DN, Stec J, Ayers M, Clark E, Bolt A, Sahin AA, Symmans WF, Hess KR, Kuerer HM, Valero V, Hortobagyi GN, Pusztai L. Global Gene Expression Changes During Neoadjuvant Chemotherapy for Human Breast Cancer. The Cancer Journal 2002, 8: 461-468. PMID: 12500855, DOI: 10.1097/00130404-200211000-00010.Peer-Reviewed Original ResearchConceptsCore biopsy specimensBiopsy specimensBreast cancerNeoadjuvant chemotherapyGlobal gene expression changesGene expression changesGood pathological responsePrimary breast cancerExpression changesHuman breast cancerHuman solid tumorsPoor respondersPosttreatment specimensPathological responseIndividual patientsChemotherapyPatientsSerial samplesSolid tumorsExpression profilesIndividual tumorsPretreatment samplesDifferent tumorsTumorsDifferent patients